| Country: | IND |
| Type: | NH |
| Route: | 515 |
| Map Custom: | yes |
| Length Km: | 111 |
| Terminus A: | Kulajan, Assam |
| Destinations: | Jonai |
| Terminus B: | Pasighat, Kulajan |
| States: | Assam, Arunachal Pradesh |
| Previous Type: | NH |
| Previous Route: | 51 |
| Next Type: | NH |
| Next Route: | 52A |
National Highway 515 (NH 515) is a National Highway in the Northeastern Indian states of Assam and Arunachal Pradesh. NH 515 starts at the intersection of NH 15 north of Dhemaji and generally traverses east and northeast. It runs for a distance of 111km (69miles), initially through Assam and the rest in Arunachal Pradesh.[1]